CASTELLI Cycling Podcast18 Mai 2025

STEVE SMITH | Most Effective Marginal Gains, Wind Tunnel Testing, Giro d'Italia Race Kit

Join us as we dive into the cutting-edge world of aerodynamic cycling apparel with Steve Smith, Castelli Brand Manager, Lifelong Marginal Gainer. From the evolution of the iconic maglia rosa for the Giro d’Italia to the latest innovative firsts, Steve shares how rider feedback, wind tunnel testing, and meticulous design come together to create high-performance gear.

We explore the behind-the-scenes logistics of outfitting pro teams, the development process inside Castelli’s Speed Shop and Pro Shop, and how amateur cyclists can benefit from the same technology. Tune in for a look at where aero clothing is headed—and Castelli’s role in shaping its future.

CHAPTERS

00:00 Intro

04:40 Amount of Clothing Supplied to Giro Race Leaders

12:24 Sanremo 8S Speed Suit

14:03 Tailoring Suits for Performance and Fit

16:25 Optimized Gear for Specific Rider Positioning

19:53 Low-Hanging Fruit for Maximum Performance

23:30 Free Aero S Bibshorts

28:08 Free Aero Prototype Testing

31:54 PoliMI Wind Tunnel – Politecnico di Milano

33:55 Custom Program, Speed Shop, and Pro Shop

36:42 Aero Race 8S Jersey: Design and Functionality

41:42 Aero Gains: Performance Comparisons

47:08 Future Frontiers in Aero Clothing

53:13 Giro d'Italia, Stage 15, Passing by Castelli HQ

55:09 WIN a Singed Maglia Rosa!

55:41 Ending

LINKS

Castelli Speed Shop

https://www.castelli-cycling.com/Speed-Shop/c/Speed-Shop

Castelli Pro Shop

https://www.castelli-cycling.com/PRO-SHOP/c/Pro-Shop

– GUEST –

Meet Steve Smith: Castelli’s Brand Manager & Lifelong Marginal Gainer! From racing bikes in Portland to leading innovation at Castelli, Steve Smith brings a deep passion for performance. In this episode, he shares insights on wind tunnel testing and the game-changing gear behind the Giro d’Italia leaders. Dive into the tech, the strategy, and the gear that keeps the pros ahead.

CONNECT

https://www.instagram.com/smittystuff/

– HOST –

Søren Jensen, Global Marketing Manager at Castelli, has worked for this iconic brand since 2006. He usually rides backroads and dirt trails, testing new gear in the Italian Dolomites. If you can't find him there, check the Castelli Headquarters in Fonzaso.

CONNECT ⁠

www.linkedin.com/in/sjensen77/

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